Creating and sending an HTTP POST request C# with Example

using System.Net; 
using System.IO; 
... 
string requestUrl = "https://www.example.com/submit.html"; 
HttpWebRequest request = HttpWebRequest.CreateHttp(requestUrl); 
request.Method = "POST"; 
//  Optionally,   set   properties   of   the   HttpWebRequest,   such   as: 
request.AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip; 
request.ContentType = "application/x-www-form-urlencoded"; 
// Could also set other HTTP headers such as Request.UserAgent, Request.Referer, 
// Request.Accept, or other headers via the Request.Headers collection. 
// Set the POST request body data. In this example, the POST data is in 
// application/x-www-form-urlencoded format. 
string postData = "myparam1=myvalue1&myparam2=myvalue2"; 
using (var writer = new StreamWriter(request.GetRequestStream())) 
{ 
writer.Write(postData); 
} 
// Submit the request, and get the response body from the remote server. 
string responseFromRemoteServer; 
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) 
{ 
using (StreamReader reader = new StreamReader(response.GetResponseStream())) 
{ 
responseFromRemoteServer = reader.ReadToEnd(); 
} 
}